Sea to Summit Thermolite® Reactor™ Extreme Sleeping Bag Liner- Long

Turn your wilderness warmth up a notch with the Sea to Summit Thermolite® Reactor™ Extreme Sleeping Bag Liner. This liner turns your go-to sleeping bag into a winter warrior and helps keep things clean and fresh for longer. Or, if it's a warm summer night, you can use it as a lightweight standalone sleeping bag. Sweet dreams.